The Uwell Valyrian Tank features a 25mm diameter base and is capable of holding up to 5ml of e-juice with a hinged top-fill design. It also features dual bottom adjustable airflow. Uwell designed this tank with an inner-coil pin system with three interchangeable pins. The pins change the path of the airflow which affects the flavor combinations. Pins can be changed by removing the coil and popping out the installed pin with a small tool. The unrestricted pin that comes pre-installed is designed for wattages between 100-200 watts for intense cloud chasing. The wave type pin is rated for a wattage range of 100-120 and is designed to provide a balance between flavor and vapor production. The spiral type pin is rated for wattage ranges between 95-105 and focuses solely on flavor enhancement. Uwell also includes two different colored wide-bore drip tips.